The 14 mm piston (plunger) for K185 is a working component of a high-pressure pump responsible for generating pressure and proper operation of the pump section. In service, it is replaced when the working surface is worn, mechanically damaged, or during pump regeneration.
MPN / reference: 41.632
APPLICATION
The plunger is used in pump service work, including:
- replacement of the piston/plunger in pumps used in K185 devices,
- regeneration of the pump working section after long-term operation,
- repairs after pressure parameter drops and unstable operation,
- pump overhauls where elements cooperating with seals are inspected.
SYMPTOMS – WHEN IT IS WORTH REPLACING
Typical symptoms of plunger wear or damage:
- drop in working pressure and lower device performance,
- jet pulsation and pressure fluctuations (after excluding nozzle and valves),
- leaks in the pump area related to accelerated seal wear,
- unusual noise/friction in the working section,
- scratches, pitting, or other damage to the plunger surface after disassembly.
HOW TO CHOOSE THE RIGHT ELEMENT
Piston/plunger selection must be precise because the element works within tight tolerances:
- by MPN / manufacturer reference: 41.632,
- by working dimension: 14 mm,
- by comparison with the removed part: check diameter, length, and geometry.
Accurate fit is crucial for tightness and durability of the pump section.
COMPATIBILITY
The element is described as intended for K185.
For safe selection, compatibility should be confirmed by MPN 41.632 and the pump documentation/parts list. Selection based only on “14 mm” without reference verification is not recommended.
[faq]
Will a 14 mm plunger fit every pump similar to K185?|Not always. Fit is also determined by element length and geometry. The safest method is to confirm by MPN 41.632 and compare with the removed part.
When replacing the plunger, is it worth checking the seals?|Yes. Worn seals can quickly worsen the operation of a new plunger and cause leaks, so during service it is worth assessing the condition of the entire sealing section.
Can a replacement be used instead of the original part?|A replacement can be considered only with full compatibility of dimensions, geometry, and working-surface quality. In pump working elements, tolerances are critical, so MPN and technical documentation should be the reference point.
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